Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (animal): 2: 11 28: 16 125: 20 130: 43 278: 12 1010: 15 1078: 19 1090: 4 1399: 9

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 4705 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr C1 (5 of 6) 12000

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 0.00 — — — 0
20th_books 0.00 — — — 0
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 114.90 1773 50% 1291 2
wiki_arts 0.00 — — — 0
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 19.99 3233 50% 6466 downrated 1
wiki_history 0.00 — — — 0
early_modern_science 9.30 4810 50% 9620 downrated 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 124.73 1477 50% 949 3
eu_parliament_debates 22.72 3447 100% 3447 1
openstax_science 71.02 1912 50% 1780 2
openstax_society 0.00 — — — 0
wpa_life_histories 9.38 6625 50% 5563 2

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.